SYSTEM FOR DRIVING AN ELEVATOR WITHOUT COUNTERWEIGHT

摘要

System for driving a cabin (1) of an elevator without counterweight, comprising at least one suspension means (5, 6) such as a belt wound around pulleys, the pulleys being arranged in sets respectively stationary and mobile of pulleys, substantially coplanar, having parallel rotation axes, wherein the belt or each belt comprises a group for adjusting the tension which is associated to a stationary set of pulleys (10), and comprises an anchoring part (11, 15) and a pulley-carrying element (12) which supports said stationary set of pulleys (10), and means (14) for the fine adjustment of the vertical distance between said pulley-carrying element (12) and said anchoring part (11).